Patent · US Active

Perovskite catalyst system for lean burn engines

US7718562B2 · kind B2 · utility

7Cited by
9References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 2, 2006
Grant dateMay 18, 2010
Priority date—
Expiry dateJun 2, 2026

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02T10/12
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A catalyst system for use with an internal combustion engine to provide emissions reductions under lean and stoichiometric operating conditions. The catalyst system comprises a first catalyst comprised of a newly developed Perovskite-based formulation having an ABO3 crystal structure designed to bring the precious metal and NOx trapping elements close together. The first catalyst acts primarily to maximize the reduction of emissions under lean operating conditions. The catalyst system also comprises a second catalyst comprised of precious metals which acts primarily to maximize the reduction of emissions under stoichiometric conditions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.